Temperatu re-reg ulatfn



m5.- s|e, |42. Patented Dec. 20, I898.

nosscn. TEMPERATURE BEGULATING APPARATUS.

(Application filed June 7, 1897. Renewed Apr. 28, 1898.)

(No Model.)

/l 27:77: ya

UNITED ENT OFFICE.

ALFRED ROESCII, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE DAVIS & ROESCII TEMPERATURE CONTROLLING COMPANY, OF NEW JERSEY;

TEM PERATU Rte-Ree u LATge c APPARATUS.

SPECIFICATION forming ,z-irt of Lett rs Patent No. 616,142, dated December 20, 1898.

Application filed June '7, 1897. Renewed Apri128, 1898. Serial No. 678,680. odem class of heat-regulating systems in which compressed air is employed as the actuating power for opening and closing the steam-controlling valves and the thermostat is em ployed for operating the air-controlling valves, The thermostat and primary air-controlling valve mechanism actuated directly thereby have previously been shown and described in the following United States Patents, which have been issued to me-to wit, Patents Nos.

583,632 and 583,633.

My present improvement pertains more especially to the combination, with the thermostat and the primary air-controlling valve mechanism, of a secondary air-controlling valve mechanism of larger capacity and an air-actuated diaphragm for actuating the secondary air-controlling mechanism, whereb he op 1 1 l.

larger air-valves may be used'than can erated by the thermostat alone.

.1 t- The construction of my mventm'n'ils tenths explained by reference to the accompanying drawing, which represents a vertical section of the air-controlling valve mechanism and diaphragm-chamber in connection with a thermostat and an air-actuated steam-controlling valve.

Like parts in the primary and secondary air-controlling valve mechanisms are represent'ed by the same reference-letters.

A represents the primary air-controlling valve mechanism, through and by which com pressed air is controlledin its passage from the inlet air-duct B'to the dia;-3.T:.g;;;-chamber C. Air is led from the valve mechanism A to the diaphragm-chamber C through the duct D. As. the compressed air enters the chamber C the diaphragm E is raised, whereby motion is communicated therefrom to the secondary air-controllingvalve mechanism F through the diaphragm-plate G and lever II.

The lever H is pivoted at one end to the standard I, while its opposite end is connected with the, protruding valve-stems a a of the air-controlling valve mechanism F. Motion is communicated from a thermostat J of any suit- ,ableconstrnctien, to the protruding ends of Elite t aitfe stenis'h b of the valve mechanism A through the lever K.

The air-controlling valve mechanisms A alike control the admission and escape of air fromthe same air-duct B through the respec-' tive branch ductsL and M, and similar parts of such valve mechanisms are, as stated, described by the same reference-letters.

The admission and escape of air from the inlet air-duct L to and from the diaphragmchamber ,0 through the primary air-controlling valve mechanism A is controlled by the rise and fall of the lever K, which lever is actuated by the thermostat, while the admission and escape of air to the secondary air-controlling valve mechanism F from the air-duct M is controlled by the rise and fall of the lever 11, which lever II is in turn actuated by the diaphragm E and diaphragm-plate G, as

diaphragm-chamber C, and as the power of Ehegdiaphragm thus actuated by compressed ili 'r is j 'uch' g'fi fglater than that of the ordinary ,riierm tatus dtorsuchpurposeliamenabled by applying the power of the air through such diaphragm to the secondary valve-actuating mechanism to open and close much larger valves than could otherwise be employed for controlling the admission and escape of air.

A and Fis controlled by the respective inletvalvc's K, which valves when in their normal condition are closed; Whenthe respective valves K are raised by the action of their respective levers K and I-I,the air is permitted to enter the respective air-chambers N N, when it passes from thence out through the respective outlet-ducts D and D. The air passing from the duct D actuates the diaphragm E, as previously stated, while the air which passes out through the duct D actuates the diaphragm B and the steam-controlling valve A,when by a reverse movement of the loversand F are both alike in construction and both air is admitted-to and discharged from said The admission of air from the duct 13 to the, respective air-controlling valve mechanisms- Ice ' closed, while the respective valves R R are K and II the respective valves K are both opened, whereby the air, which has done its work, returns through the respective ducts. 'D D and passes up through the side ducts S S to the outlet-chambers O 0, from which it es: capes through the respective outlet-pol ts T The lever K is provided ith aftensio spring U,iby which the resistanee of the then mostat may be increased or d ijnish'ed b turning the tension-screw V up 'r'dior own, ward. i i v The lever II is provided wi' h a te sioir spring I, the ofiice of which is to draw the lever II downward with the diaphragm-plate G and diaphragm E, when the air beneath such diaphragm is permitted to escape. The spring Wis attached at one end to the lever II and at its opposite end to the bed-plate Y.

It will be understood that the steam-controlling valve A is actuated through the diaphragm 15' in the ordinary manner, w ereby the steam-valve is closed by the ressure of the air and opened as soon as the air is released by the action of the spring 0'.

The valves K K and R R are elastic and of such dimensions that when in their normal condition they close the respective inlet and outlet ports,against which they are adapted to bear of their own elasticity, while they react against the bearings around their respective stems and close them against the es; cape of air, whereby the necessity of using packing around such valve-stems to prevent the escape of air is avoided. This construc'-' tion of elastic valves is also shown in my prior patents, to which I have referred. 1

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In aif ai r-con trolling device for heat-reg ulatin g systems, the combination of a primary air-controlling valve mechanism, provided with an inlet air-duct, and both inlet and outlet air-controlling valves; a diaphragm and diaphragm-chamber; an aka-inst communieating between said primary air-controlling valve mechanism and said diaphragm-chamber, whereby the air is caused to first pass through the primary valve mechanism, by which it is controlled, before it enters said diaphragm-chamber; a valve-actuating arm comm union-1 ing from an actuating-thennostat with the protruding valve-stems of said air controlling valves asecondary air-controlling valve mechanism provided with an inlet airduct, and inlet and outlet air-controlling valves; a diaphragm-plate and lever commu nicating between the diaphragm and the proping val ,e-stems of said secondary airj trolling galve mechanism; an outlet airiiet conunu hicating between said secondary air-controlling valve mechanism and the actuating mechanism of a steam-controlling valve, all siibstantially as and for the purpose specified.

2. In an air-controlling device for heat-regulating systems, the combination of a primary air-controlling valve mechanism provided with aninlet air-duct, and both inlet and out let air-controlling valves; a diaphragm and diaphragm-chamber; an air-duct communieating between said primary air-controlling valve mechanism and said diaphragm -chaw her, whereby the air is caused to first pass through the primary valve mechanism, by which it is controlled, before it enters said diaphragm-chamber; a-val-ve-actuating arm communicating from an actuating-thermostat with the protruding valve-stems of said air controlling valves; a secondary air-controlling fvalve mechanism-provided with air-controlling valves and an inlet air-duct, both of saidflnlet air-duets to said air-controlling valve mechanisms being connected with a single supply-duct; a valve-actuating lever communicating from said diaphragm with the protruding ends of the valve-stems of said secondary air-controlling valve mechanism; a

spring connected with the free end of said lever and the supporting bed-plate, said lever being adapted to be moved by the action of the air in one direction and the action of said spring in the opposite direction, as the air is permitted to enter and escape; an outlet airduct communicating between said secondary air-controlling valve mechanism and the actuating mechanism of a steam-controlling valve, all substantially as and for the purpose specified. I

In testimony whereof I aflix my signature in the presence of two witnesses.

ALFRED. ROESCII. Witnesses:

FRED. H. DAVIS, HAROLD Frsn. 

